Lab #5 - Google Docs PDF

Preview

Summary

Download Lab #5 - Google Docs PDF

Description

 Loya1

IsaiahLoya104406703 BioStat100A;Lab1F 15May2017 Lab#5 Analysis: 1. SummaryStatisticson“trimmed”coldIschemiaHours

 a. TheCITdistributionisrelativelynormal,withaslightrightskew. 2.  a. Histogram

 Loya2

b. BoxPlot

i.

CITdoesappeartobegenerallyanormaldistribution.

3. QnormPlot

a. CITisalongthetrendline. CompetencyAssessment(C7): A. Longitudinalstudiesareobservational,theyconductobservationsonsubjectsovera sustainedtimeperiod.Crosssectionalstudiesarealsoobservational,butusesmultiple

 Loya3

groupswithdifferentexposures.Experimentalstudiesinvolvedirectlyintroducinga variabletochangetheenvironment B. Metaanalysisisthecombinationofmultipledatasetsfromdifferentstudies. a. Strengths:Increaseinpowerandprecision,avoidsbias b. Limits:Heterogeneity,issueswithpublicationandreportingbias,qualityoftrials maybelow. C. Effectsizeisawayofquantifyingthedifferencebetween2groups,itemphasizes differenceratherthanconfoundingdifferencewithsamplesize. a. Cohen’sDisaneffectsizeusedtoindicatethestandarddifferencebetween2 means. D. Theconclusionreachedisthatthere’saclearassociationbetweensoftdrinkconsumption andenergyintake.Thisconclusionleadstothesuggestionthatthepopulationshould decreaseitssoftdrinkconsumption. ...